Well i washed the footers today. There are weird chunks of concrete and gaps in a few places.
I'm think it is better to put it on the footer, the old tiles are still bellow the foot, not easy to get out. I get the feeling the water will go towards that corner of the footer.
Also since there is still not much water coming in, even with lots of washing right in holes etc. It is amazing how much dirt is in some holes, also the algae sludge on the one wall was no doubt the problem with the smell.
It maybe he did not pump the septic or add enzymes when they switched over and so it oozed around the foundation wall. Perhaps just bacteria build up and poor drainage.
So what should i do about these chunks, maybe the pic is not that good but it is about 4-6" high a few of them. 1) try and remove them, doubtful 2) put the pipe beside them 3) build corner pipe that goes around the chunks but keep close to the footer corner. 4) Put the pipe bellow the footer, beside the old tiles, means some more hand digging.